1-[[(6R,7R)-7-[[(2Z)-2-(2-Amino-4-thiazolyl)-2-[(1-carboxy-1-methylethoxy)imino]acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]pyridinium Inner Salt PentahydrateGR 20263FortamFortazModacinTazicefTazidimeCeftazidime Pentahydrate(Contain 1 equivalent of Na2CO3 as stabilizer)FortumBiotumCeftacidin